Typically it takes about 15 minutes for DNS changes to take effect. However, it can occasionally take longer for a change you've made to update across the Internet's DNS system. If you're having trouble with mail flow or other issues after adding DNS records, see Troubleshoot issues after changing your domain name or DNS records.

Add a TXT record for verification

Before you use your domain with Office 365, we have to make sure that you own it. Your ability to log in to your account at your domain registrar and create the DNS record proves to Office 365 that you own the domain.

Note

This record is used only to verify that you own your domain; it doesn't affect anything else. You can delete it later, if you like.

To get started, go to your domains page at Dynadot by using this link. You'll be prompted to sign in first.

On the Manage page, find the name of the domain that you want to edit, and then, in the Name Server column, choose the NS: name servers link.

On the Edit Name Server Settings page, choose the DNS tab.

In the Domain Record (required) section, find the boxes for the new record, and then type or copy and paste the values from the following table.

(Choose the Record Type value from the drop-down list.)

Record Type

IP Address or Target Host

TXT

MS=ms XXXXXXXXNote: This is an example. Use your specific Destination or Points to Address value here, from the table in Office 365. How do I find this?

Choose Save DNS.

(You may have to scroll down.)

Wait a few minutes before you continue, so that the record you just created can update across the Internet.

Now that you've added the record at your domain registrar's site, you'll go back to Office 365 and request Office 365 to look for the record.

Typically it takes about 15 minutes for DNS changes to take effect. However, it can occasionally take longer for a change you've made to update across the Internet's DNS system. If you're having trouble with mail flow or other issues after adding DNS records, see Troubleshoot issues after changing your domain name or DNS records.

Add an MX record so email for your domain will come to Office 365

To get started, go to your domains page at Dynadot by using this link. You'll be prompted to sign in first.

On the Manage page, find the name of the domain that you want to edit, and then, in the Name Server column, choose the NS: name servers link.

On the Edit Name Server Settings page, choose the DNS tab.

In the MX Records (optional) section, find the boxes for the new record, and then type or copy and paste the values from the following table.

If there are any other MX records, delete each one by selecting it and then pressing the Delete key on your keyboard.

Choose Save DNS.

Add the CNAME records that are required for Office 365

To get started, go to your domains page at Dynadot by using this link. You'll be prompted to sign in first.

On the Manage page, find the name of the domain that you want to edit, and then, in the Name Server column, choose the NS: name servers link.

On the Edit Name Server Settings page, choose the DNS tab.

In the Subdomain Records (optional) section, find the boxes for the four new records, and then type or copy and paste the values from the following table.

(Choose the Record Type value from the drop-down list.)

Subdomain

Record Type

IP Address or Target Host

autodiscover

CNAME

autodiscover.outlook.com

sip

CNAME

sipdir.online.lync.com

lyncdiscover

CNAME

webdir.online.lync.com

msoid

CNAME

clientconfig.microsoftonline-p.net

enterpriseregistration

CNAME

enterpriseregistration.windows.net

enterpriseenrollment

CNAME

enterpriseenrollment.manage.microsoft.com

When you have added the last CNAME record, choose Save DNS.

(You may have to scroll down.)

Add a TXT record for SPF to help prevent email spam

Important

You cannot have more than one TXT record for SPF for a domain. If your domain has more than one SPF record, you'll get email errors, as well as delivery and spam classification issues. If you already have an SPF record for your domain, don't create a new one for Office 365. Instead, add the required Office 365 values to the current record so that you have a single SPF record that includes both sets of values.

To get started, go to your domains page at Dynadot by using this link. You'll be prompted to sign in first.

On the Manage page, find the name of the domain that you want to edit, and then, in the Name Server column, choose the NS: name servers link.

On the Edit Name Server Settings page, choose the DNS tab.

In the Domain Record (required) section, find the boxes for the new record, and then type or copy and paste the values from the following table.

(Choose the Record Type value from the drop-down list.)

Record Type

IP Address or Target Host

TXT

v=spf1 include:spf.protection.outlook.com -all Note: We recommend copying and pasting this entry, so that all of the spacing stays correct.

Choose Save DNS.

(You may have to scroll down.)

Add the two SRV records that are required for Office 365

To get started, go to your domains page at Dynadot by using this link. You'll be prompted to sign in first.

On the Manage page, find the name of the domain that you want to edit, and then, in the Name Server column, choose the NS: name servers link.

On the Edit Name Server Settings page, choose the DNS tab.

In the Subdomain Records (optional) section, find the boxes for the two new records, and then type or copy and paste the values from the following table.

(Choose the Record Type value from the drop-down list.)

Subdomain

Record Type

IP Address or Target Host

_sip._tls

SRV

100 1 443 sipdir.online.lync.com Note: We recommend copying and pasting this entry, so that all of the spacing stays correct.

_sipfederationtls._tcp

SRV

100 1 5061 sipfed.online.lync.com Note: We recommend copying and pasting this entry, so that all of the spacing stays correct.

Choose Save DNS.

(You may have to scroll down.)

Note

Typically it takes about 15 minutes for DNS changes to take effect. However, it can occasionally take longer for a change you've made to update across the Internet's DNS system. If you're having trouble with mail flow or other issues after adding DNS records, see Troubleshoot issues after changing your domain name or DNS records.

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